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Flexible Solid-state Supercapacitor Based on Tin Oxide/reduced Graphene Oxide/bacterial Nanocellulose

Overview
Journal RSC Adv
Specialty Chemistry
Date 2022 May 13
PMID 35548204
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Abstract

We demonstrate a flexible and light-weight supercapacitor based on bacterial nanocellulose (BNC) incorporated with tin oxide (SnO) nanoparticles, graphene oxide (GO) and poly(3,4-ethylenedioxyiophene)-poly(styrenesulfonate) (PEDOT:PSS). The SnO and GO flakes are introduced into the fibrous nanocellulose matrix during bacteria-mediated synthesis. The flexible PEDOT:PSS/SnO/rGO/BNC electrodes exhibited excellent electrochemical performance with a capacitance of 445 F g at 2 A g and outstanding cycling stability with 84.1% capacitance retention over 2500 charge/discharge cycles. The flexible solid-state supercapacitors fabricated using PEDOT:PSS/SnO/rGO/BNC electrodes and poly(vinyl alcohol) (PVA)-HSO coated BNC as a separator exhibited excellent energy storage performance. The fabrication method demonstrated here is highly scalable and opens up new opportunities for the fabrication of flexible cellulose-based energy storage devices.

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